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Xcode is Too New

Hi, I'm unable to open my storyboard. I get the following error:
Xcode is too new. This file has been edited in a version of Xcode which is unsupported by the designer. Documents saved in Xcode 9.1 format, or older, are supported.
This has just started happening? I tried re-building my solution from scratch and got the same error. I'm using Xcode verison 9.1 (9B55) . I thought to install an earlier version but can't see how that's possible. I'm using Visual Studio Community for the Mac.
I know someone has already posted something similar and said that he found a work-a-round but I could follow his solution. I've sent him a message but haven't got a response yet. Any help would be much appreciated.
Thanks,
Brian

Steven, Changing the tools version to 13196 did not work for me. Now when I open the story board I get the following error:
The file cannot be openned.
This file could not be upgraded to the correct format automatically and so cannot be opened. If Xcode is correctly configured then re-saving the file in Xcode may resolve the issue.
I was unable to open the story board in Xcode.
Any clues?
Thanks,
Brian.

To resolve the 'Xcode is too new' issue, I installed all updates to Visual Studio Community. I no longer got the 'Xcode is too new error'. I got "There was a problem parsing the XML in this document" error. To fix this I removed the tag from the storyboard file and everything worked as expected. Hope this helps.

Yay, it's broken yet again. Just updated stuff on the Mac, since I hadn't been using it for a while, and the storyboard designer in Visual Studio for Windows breaks after I modify my files, again... "Xcode is too new."

How about you just stop showing this error and let us use the designer anyways? The work-around is always to edit the files and change the toolsVersion and version attribute to something lower. It's not like something actually breaks... so frustrating.